During Fall 2007 I am giving a series of talks in the Penn State Logic Seminar. The
theme of the talks is: ** Mass Problems**. My slides are
available in several formats:

- Talk 1, 16 October 2007,
*Introduction to mass problems*: PDF, PS. - Talk 2, 23 October 2007,
*Mass problems associated with effectively closed sets, part 1*: PDF, PS, DVI. - Talk 3, 30 October 2007,
*Mass problems associated with effectively closed sets, part 2*: PDF, PS, DVI.

A list of my recent and upcoming talks is available.

My publication list is available.

t20@psu.edu / 30 October 2007